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(No Mogel.)

' C. W. GLIDDEN & A. D. ELLIOTT.

HEEL NAILING AND TRIMMING MACHINE.

Patented Aug. 11.1891.

UNITED STATES PATENT OEEIoE.

CHARLES IV. GLIDDEN, OF LYNN, AND ALVIN D. ELLIOTT, OF LAXVRENCE,

ASSIGNORS TO JAMES IV. BROOKS, TRUSTEE, OF CAMBRIDGE, MASSACHU- SETTS.

HEEL NAILING AND TRIMMING MACHINE.

SPECIFICATION forming part of Letters Patent No. 457,462, dated August11, 1891. Application filed March 3, 1891. Serial No. 383,578. (Nomodel.)

To all whom it may concern:

Be it known that we, CHARLES W. GLIDDEN, of Lynn, county of Essex, Stateof Massachusetts, and ALVIN D. ELLIOTT, of Lawrence, county of Essex,State of Massachusetts, have invented an Improvement in Heel Nailing andTrimming Machines, of which the following description, in connectionwith the accompanying drawings, is a specification, like letters on thedrawings representing like parts.

This invention has for its object the production of a machine by whichto nail what are known as spring-heels.

In accordance with this invention the nails to be driven into the heelend of the sole are placed or loaded into a loader or skimmer, wherethey are retained frictionally by pressure against their sides betweentheir points thereby, and this skimmer is laid upon or in contact with anail-box containing usual drivers, which, when actuated in usual manner,contact with the headset and drive the nails from the loader or skimmerinto the heel.

The skimmer, in accordance with this invention, has a guiding-surfacefor the knife used in trimming the heel.

The knife referred to is connected to a segmental base mounted in aknife-holder adjustable horizontally upon a guide pivoted to abearing-block made adjustable toward and from the nail-box.

This invention is an improvement on that described in United StatesPatent No. 217,866, granted to Charles WV. Glidden July29, 1879. In thepatent referred to the knife-holder is adapted to turn about ahorizontal pivot arranged radially with relation to the axes about whichthe knife travels in trimming, such arrangement of pivot enabling theknife to tip, so that its upper end may tip to at the proper time be inadvance of its lower edge, as required, to keep the edge of the knifetangent to the part of the heel being trimmed. In this presentinvention, however, the knife-holder is hinged to theradially-adjustable bearingblock, so that it may be turned back out ofthe way while the nails are being driven into the spring-heel and theloader or skimmer is being applied or removed.

Figure 1 is an isometric view of a sufficient portion of a heel nailingand trimming machine to enable our invention tobe understood. Fig. 2 isa sectional detail of a portion thereof in a line at right angles to thelength of the loader. Fig. 3 is a sectional detail of the loader withnails held therein, and Fig. 4 shows the screw 2 removed.

Theform-plate 0, having the grooves 9 and 10, and the trinuning-levera,carrying a turn-table plate d, grooved to contain a bearing-block i, areand may be all substantially as in said patent,where the parts aredesignated by like letters, except that the shape of the bearingblockhas been somewhat changed.

It will be understood that the turn-table will have at its lower sideroller or other studs to enter the grooves 9 10, as provided for inUnited States Patent No. 166,7 65, dated August 17, 1875, and issued toGlidden and Simmons. a hollow shank 1, extended down through and securedto the form-plate c, the drivers 70, and nail-box 7c are allsubstantially as shown in the latter patent, where they are designatedby like letters, except that the nail-box is shorter for the loader orskimmer, to be described, and during the operation of nailing forms anextension of the nail-box.

The loader or skimmer B, as it is frequently called, has a series ofholes for the reception of the nails n to be driven into thespring-heels, the top of the said holder being shaped substantially asshown in United States Patent No. 347,482, granted to Charles WV.Glidden August 17 1886, in order to adapt it to the shape of the heelend of the sole.

The holes made in the loader B are intersected by recesses, (shown inFig. 2,) which receive each a ball I), a spring 17', and, preferably, ascrew 12 by which to vary the effective strength of the spring. The balland spring constitute one form-of nail-holding device to contactfrictionally with the nail at its side near its head end, to thus retainin place The heel pattern-plate L, having the nail-receiving hole madein the nail-box.

Prior to our invention we are aware that nails having heads have beenacted upon by spring-fingers to center the nails in the holes from whichthey are driven. Such form of holding device we disclaim.

The nail loader or skimmer is provided externally with a shoulder h,which constitutes a knife-guide and enables the knife to cut the heelclose to the tread-plate of the loader and yet enables the parts whichsupport the knife I to come properly up to the heel pattern-plate.

The knife marked 6 differs somewhat in shape from the knife designatedby like letters in Patent No. 217,866; but it is attached to a segmentalbase e, fitted to slide in correspondingly-shaped guides in aknife-holder f, as provided for in said patent.

The knife herein represented is so shaped that it may rest on theshoulder h referred to, the shank of the knife shown as slotted beingattached by a suitable screw 2 to the upper end of the segmental base, aspring m, as herein represented, being also attached at one end by thesame screw to the upper end of the said base, the opposite end of thesaid spring being attached to the knife-holder by a screw 3, the saidspring acting normally to lift upwardly the said base, so that the upperblunt end 5 of the knife, which is adapted to act as a guard, contactswith the quarter of the upper at theheel-seat.

The knife-holder f is provided with a dovetail slot to embraceacorrespondingly-shaped guide f having ears f f which are hinged by apin 6, extended through them and the upright part of the bearing block.The bearing-block is made horizontally adjustable toward and from thenail-box in usual manner by the nut 7.

In practice the loader or skimmer will be filled with nails 01 in anyusual manner, and, as shown in Fig. 3, the said nails will be retainedin place frictionally by the nail-holding devices, the nails being putinto the holes of the loader while wrong side up. While the knife isturned about the hinge-pivot 6 or over to the right from the positionshown in Fig. 1, the loader will be put upon the nailbox, it being, itwill be understood, held up in usual manner, as by a spring below therod 1, all as provided for in United States Patent No. 166,765, beforereferred to, the loader being applied-to the nail-block right nailedwill be placed in the tread face of the loader, and the drivers will bemade in usual manner common to the patent referred to to drive the nailsfrom the loader into the heel end of the sole and the loader toconstitute the spring-heel. The heel having been nailed, theknife-holder f will be turned over toward the loader and the knife mpermitted to rest in the shoulder h, as shown in Fig. 1, when thetrimmer-lever a will be actuated in usual manner to cause the knife totravel about and trim the edge of the heel to shape.

The loader shown forms practically an extension of the nail-box, and wedesire it to be understood that under the term loader, as used herein,we desire to cover and include as within our invention any box tocontain nails to drive out therefrom.

The screw 2, which holds the shank of the knife to the segmental base 6,is shouldered, as shown separately in Fig. 4., the shoulder 14 actingagainst the shank, while the part of the screw between the shoulder 14and the under side of the head enables the slotted part of the spring toplay as required as the base 6' moves in the holder f.

WVe claim 1. In a heel nailing and trimming machine, the followinginstrumentalities, viz: a nail holding loader or box, combined with aseries of recesses intersecting the nail-holes, and

a ball-like nail-holder in each of said recesses normally contactingwith the nails midway theirlength or between their points and heads, andretaining devices for the holders, said holders keeping the nailspressed against the opposite side of the nail-hole in the loader or box,thus enabling the box to be inverted or used either side up without thenails dropping out, substantially as described.

2. In a heel nailing and trimming machine, the followinginstrumentalities, viz: a nailholding loader or box, combined with aseries of ball-like nail-holders, springs, and adjusting-screws actingupon the said springs, the said nail-holders intersecting the nailholescontacting with the nails midway their length or between their pointsand heads, said holders keeping the nails pressed against the oppositeside of the nail-hole in the leader or box, thus enabling the box to beinverted or used either side up without the nails dropping out,substantially as described.

In a heel nailing and trimming machine, a radially-movablebearing-block, a nail-holding loader or box having a shoulder, and aknife, combined with a slotted knife-holder and a knife-holder guideupon which said knife-holder moves laterally, said guide being hinged tothe said bearing-block and nor- TKO mally held away from thenail-holding loader names to this specification in the presence of orbox, except when'the heel is to be trimmed, two subscribing Witnesses.as set forth.

T 4:. In a heel nailing and trimming machine, 33 gi' igr 5 the knife,the segmental base e, to which it is attached, the holder f, theholder-guide, Witnesses for 0. WV. Glidden: and the base-block 1',combined with a spring W. O. ILLSON, connected loosely t0 the base andacting nor- H; P. FAIRFIELD. mally to elevate the said base and knife,sub WVitnesses for A. D. Elliott: r0 stantially as described. WV. 0.\WILLSON,

In testimony whereof we have signed our WVILBUR E. ROWELL.

